INFO: task segctord:11724 blocked for more than 144 seconds.
      Not tainted 6.10.0-next-20240726-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:segctord        state:D stack:28272 pid:11724 tgid:11724 ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5239 [inline]
 __schedule+0x1800/0x4a60 kernel/sched/core.c:6603
 __schedule_loop kernel/sched/core.c:6680 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6695
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6752
 rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
 __down_write_common kernel/locking/rwsem.c:1306 [inline]
 __down_write kernel/locking/rwsem.c:1315 [inline]
 down_write+0x1d7/0x220 kernel/locking/rwsem.c:1580
 nilfs_transaction_lock+0x25d/0x4f0 fs/nilfs2/segment.c:357
 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2536 [inline]
 nilfs_segctor_thread+0x551/0x11b0 fs/nilfs2/segment.c:2622
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>

Showing all locks held in the system:
1 lock held by ksoftirqd/0/16:
 #0: ffff8880b923ea18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:568
1 lock held by khungtaskd/30:
 #0: ffffffff8e937a60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
 #0: ffffffff8e937a60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
 #0: ffffffff8e937a60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6695
3 locks held by kworker/0:2/940:
 #0: ffff888016e92548 ((wq_completion)pm){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
 #0: ffff888016e92548 ((wq_completion)pm){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
 #1: ffffc90003c6fd00 ((work_completion)(&hcd->wakeup_work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
 #1: ffffc90003c6fd00 ((work_completion)(&hcd->wakeup_work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
 #2: ffff8880240c6190 (&dev->mutex){....}-{3:3}, at: device_lock include/linux/device.h:1009 [inline]
 #2: ffff8880240c6190 (&dev->mutex){....}-{3:3}, at: usb_remote_wakeup+0x23/0x100 drivers/usb/core/hub.c:3840
2 locks held by kworker/u8:7/1102:
2 locks held by getty/4983:
 #0: ffff88802b1af0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
 #1: ffffc900031232f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2211
4 locks held by syz.4.973/11721:
1 lock held by segctord/11724:
 #0: ffff88802d27a2a0 (&nilfs->ns_segctor_sem){++++}-{3:3}, at: nilfs_transaction_lock+0x25d/0x4f0 fs/nilfs2/segment.c:357
4 locks held by syz.4.1504/15305:
 #0: ffff888011897408 (
&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:799 [inline]
&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: __sock_release net/socket.c:658 [inline]
&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: sock_close+0x90/0x240 net/socket.c:1421
 #1: ffffffff8fce6670 ((netlink_chain).rwsem){++++}-{3:3}, at: blocking_notifier_call_chain+0x53/0x90 kernel/notifier.c:387
 #2: ffff8880246178b8 (&nft_net->commit_mutex){+.+.}-{3:3}, at: nft_rcv_nl_event+0x120/0x6b0 net/netfilter/nf_tables_api.c:11419
 #3: ffffffff8e93ce38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline]
 #3: ffffffff8e93ce38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:967
3 locks held by syz.4.1504/15308:
1 lock held by syz.0.1497/15317:
 #0: ffff88802581a0e0 (&type->s_umount_key#72/1){+.+.}-{3:3}, at: alloc_super+0x221/0x9d0 fs/super.c:344

=============================================

NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.10.0-next-20240726-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
 nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
 trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
 check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
 watchdog+0xff4/0x1040 kernel/hung_task.c:379
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 52 Comm: kworker/u8:3 Not tainted 6.10.0-next-20240726-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Workqueue: events_unbound cfg80211_wiphy_work
RIP: 0010:preempt_count_add+0x6c/0x190 kernel/sched/core.c:5710
Code: a0 7e 48 c7 c0 80 f9 f2 94 48 c1 e8 03 42 0f b6 04 38 84 c0 0f 85 e4 00 00 00 83 3d fd 19 90 13 00 75 11 65 8b 05 bc f7 a0 7e <0f> b6 c0 3d f5 00 00 00 73 5e 65 8b 05 ab f7 a0 7e 25 ff ff ff 7f
RSP: 0018:ffffc90000bc7540 EFLAGS: 00000246
RAX: 0000000080000001 RBX: 0000000000000001 RCX: ffffffff94f2f903
RDX: ffff8880159a3c00 RSI: 0000000000000001 RDI: 0000000000000001
RBP: ffffc90000bc76a0 R08: ffffffff814107f1 R09: ffffffff814120bf
R10: 0000000000000003 R11: ffff8880159a3c00 R12: ffffc90000bc7738
R13: dffffc0000000000 R14: 0000000000000001 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c47eddc CR3: 000000001f160000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 unwind_next_frame+0xc1/0x2a00 arch/x86/kernel/unwind_orc.c:479
 __unwind_start+0x641/0x7c0 arch/x86/kernel/unwind_orc.c:760
 unwind_start arch/x86/include/asm/unwind.h:64 [inline]
 arch_stack_walk+0x103/0x1b0 arch/x86/kernel/stacktrace.c:24
 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
 poison_slab_object+0xe0/0x150 mm/kasan/common.c:240
 __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256
 kasan_slab_free include/linux/kasan.h:184 [inline]
 slab_free_hook mm/slub.c:2252 [inline]
 slab_free mm/slub.c:4473 [inline]
 kmem_cache_free+0x145/0x350 mm/slub.c:4548
 kfree_skb_reason include/linux/skbuff.h:1260 [inline]
 kfree_skb include/linux/skbuff.h:1269 [inline]
 ieee80211_iface_work+0x272/0xf20 net/mac80211/iface.c:1644
 cfg80211_wiphy_work+0x2db/0x490 net/wireless/core.c:440
 process_one_work kernel/workqueue.c:3231 [inline]
 process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312
 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:144
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>